The reference wallet uses a minimum API level 29 (https://github.com/eu-digital-identity-wallet/av-app-android...)

Although, hardware attestation should be available for Android 8+. Only older Android versions can be spoofed.

You can still get strong integrity, but [as the docs state](https://developer.android.com/google/play/integrity/verdicts):

> On Android 12 and lower, the MEETS_STRONG_INTEGRITY verdict only requires hardware-backed proof of boot integrity and does not require the device to have a recent security update. Therefore, when using the MEETS_STRONG_INTEGRITY, it is recommended to also take into account the Android SDK version in the deviceAttributes field.